All Android 10 launch devices will no longer have the 2-button gesture navigation that was introduced in Android 9 Pie. If you cared for this and want it back on your Pixel 4, simply flash the Magisk Module attached to this thread and reboot. You should see the 2-button navigation option in Settings > System > Gestures > System navigation.
This Magisk Module simply adds the 2-button navigation overlay from the Pixel 3. No changes are made to any system files or properties.
This Magisk Module simply adds the 2-button navigation overlay from the Pixel 3. No changes are made to any system files or properties.